So far as the grain size order of magnitude is concerned, the thickness of the acicular ferrite is about 200nm, while the thickness of the austenite existing inside the ferrite is only several nm to 10 nm.是什么意思_So far as the grain size order of magnitude is concerned, the thickness of the acicular ferrite is about 200nm, while the thickness of the austenite existing inside the ferrite is only several nm to 10 nm.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句